Those steep Sevenoaks gardens need properly engineered shed foundations. Kent chalk and clay don't mix well with wooden structures - get the groundwork right first time.
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Garden sheds perched on Sevenoaks' hillsides face unique challenges. Between the chalk downs and heavy clay pockets around Kemsing, your average paving slab foundation simply won't cut it. Years of local installations have taught us exactly which base type suits each plot from Dunton Green's newer estates to Otford's period properties.
Concrete raft foundations work brilliantly on level TN14 plots, whilst stepped bases handle those tricky Kemsing slopes. Proper membrane barriers prevent moisture wicking up through Kent's notoriously damp soil. Steel mesh reinforcement stops seasonal ground movement cracking your base - particularly important near those mature oaks Sevenoaks is famous for.
Local knowledge matters when dealing with conservation area restrictions around TN13. Having navigated planning considerations from the High Street to Riverhead, we understand which base designs satisfy both structural needs and neighbourhood aesthetics.
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Standard 8x6ft bases start around £650-£850 including excavation and materials. Larger workshop foundations or difficult access sites near the North Downs typically range £1,200-£2,500 depending on ground conditions.
Absolutely - from TN13 properties near Knole Park through TN14's residential areas to TN15's rural spots. Regular projects in Otford, Dunton Green and Kemsing mean we know the best routes for material delivery.
Weather permitting, most bases take 1-2 days including excavation and concrete pour. Allow 48-72 hours curing time before positioning your shed, especially during damp autumn months.
Each installation carries decade-long structural integrity coverage. This protects against settlement, cracking or water ingress - common issues with DIY bases on Sevenoaks' variable ground.
Recycled plastic grid systems work wonderfully for lighter structures. They're permeable, avoiding drainage issues common in TN15's clay areas, and require minimal excavation - perfect for tree preservation zones.
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